Water heater



J. W. MILLER WATER HEATER June 11, 1929.

2 Sheets-Sheet 1 Filed June 4, 1927 June 11, 1929.

J. w. M I LLER WATER HEATER Filed June 4, 1927 2 Sheets-Sheet 2 INVENTQRW44. M

BY w a;

ATTORNEY Patented June 11, 1929.

UNITED STATES JOHN w. MILLER, or EAST CLEVELAND, OHIO.

WATER HEATER.

Application filed June 4,

c This invention relates to water heaters especially adapted for lowpressure vapor or steam heating apparatus, the heater belng of thesectional type, the water sections being enclosed in a water jacketedcasing which contains a fire box. The inner cast iron sections areassembled in the casing and connected to manifolds at front and. rear,to which are also connected the hollow casing sections, the wholeforming a built-up boiler of high efiiciency.

A further feature of the invention is a hollow top forming asuper-heater.

The invention will more fully be understood from the accompanyingdrawings in which Fig. 1 is a vertical longitudinal section of theheater on the line 11 of Fig. 4. Fig. 2, is a horizontal section on theline 22' of Fig. 1. Fig. 3 is a horizontal section on the line 3-3 ofFig. 1. Fig. 4 is a vertical section on the line ;4--4 of Fig. 1.

Fig. 5 is a section on the line 5-5 of Fig. 1. Fig. 6 is a section onthe line 6-6 of Fig. 7. Fig. 7 is a side elevation of the boiler.

The boiler comprises hollow side casings 6, a hollow front plate 7,'aback casing 8, and a hollow top casing 9, these parts being connected bylugs and bolts indicated at 10. It may here be stated that the chambersof the sideand top casings form water spaces which are connected to eachother in a manner to be presently described. The hollow front 7 may beused for heating water for a kitchen supply or the like, by means ofconnections 11.

The cast iron water sections indicated at 12 are set edgewise besideeach other in the casing, extending from front to rear, each sectionbeing saddle shaped or curved over the fire box 13 through which accessmay be had by the door 14 in the front plate, the grate ars beingindicated at 15 and the ash pit at 16, in the base 17 of the casing.Eachsection 12 comprises a front wall 18, sides 19 dished inwardly, arear wall 20, a curved bottom wall 21 at the rear of which is aninclined bottom wall 22, and a top wall 23 completes the section. At thefront the sections are recessed to rest on a ledge-24. At the rear, theinclined walls 22 of the sections .rest on a cross shelf or support 25.The front and rear walls of the casing have flanges 26 separating thesections.

A front manifold 27 extends across the front of the casing near the topthereof, and

1927. Serial No. 196,510.

a rear manifold 28 extends across the rear of the casing near the bottomthereof, and the front and rear walls are bored to receive nipples 29and 30 by whichthe water sections are connected to the manifolds, aswell as the hollow side walls 6 which are similarly connected to themanifolds. The front manifold 27 is also connected to the hollow topplate 9 by passages 31 cored in the front wall.

Thefire box communicates with the spaces between the water sections 12,the products of combustion flowing to an upper space 32 under thetop 9,from which the flue con nection 33 takes off through a neck 34 on thetop plate. The flue 35 has a direct outlet 36 to the stack, controlledby the damper 37, and also communicates with a down draft or indirectoutlet 38 the downtake section of.which is provided with bafiles 39which may serve as a spark arrester. This down-take section is formed orenclosed in a reservoir 40 mounted on the rear plate of the boilercasing, the reservoir having a return connection 41 from the system, anda lower pipe connection 42 to the lower manifold 28., An outlet orsupply connection from the boiler to the radiators is shown at 43. Thedamper may be opened for direct draft, or may be closed for draftthrough the section in the reservoir.

The parts of the casing and the water sections may be cast separatelyand readily assembled, together with the manifolds and other parts. Bytaking off the top and the manifolds the sections can be got at forremoval through the top, without disturbing the side wall and basearrangements. The products of combustion in the space 32 form asuper-heater for the vapor in the hollow top 9, and a circulation isprovided from the cold manifold 28 through the sections 12 to the hotmanifold 27 and the hollow top The reservoir 40 will be kept full by thereturn condensation. The hollow side lates 6 are also connected to themanifol s, as stated, and thus assist in heating the water therein, thewhole forming a: very efficient device for exchangingheat from theproducts of combustion to the water.'

I claim:

1. A water heater comprising a casing having a fire box therein andhollow top and side walls, spaced water sections arranged vertically inthe casing and spaced from said top and side Walls, each of saidsections having a rearwardly depending part in the back part of thefirebox, a lower manifold outside the rear Wall of the casing and havingconnections into the depending part of the respective sections, an uppermanifold secured to the front Wall of the casing and having connectionsthrough the same to the front upper part of the sections and to thehollow side Walls and also to the hollow space in the top of the casing,and a fiue extending from the firebox through the hollow top wall of thecasing.

2. A water heater as in claim 1, the casing being built up of flathollow side walls, a fiat hollow top resting upon and secured to theupper edges of said side Walls, and flat front and rear Walls fittingagainstthe nature.

JOHN T. MILLER.

